Time and again

[Tomasito]

I have read the Obama speech when he was in Ghana. Along the the speech i saw a expression which I didn't find the meaning. The expression is "Time and again". Can someone tell me the meaning of this expression?
_________________
Education is a progressive discovery of our own ignorance.
- Will Durant

[Torsten]

Hi Tomasito,

You read Alan's answer to your question here: Time and again.

Regards,
Torsten
PS: Please note that it's 'an expression' not 'a expression'.

TOEFL listening discussions: A conversation between a university student and an employee in the student services center

[Tomasito]

Thank you Tosten to your answer. Now I'm sure about the meaning of Time and again. I didn't pay attention on the article I used. One more time, thank you. :wink:
_________________
Education is a progressive discovery of our own ignorance.
- Will Durant